Method for manufacturing an ink-jet head

a manufacturing method and inkjet technology, applied in the field of inkjet head, can solve the problems of reducing the manufacturing yield of the head, more difficult positioning process between,

Inactive Publication Date: 2005-12-13
BROTHER KOGYO KK
View PDF28 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enhances the positional accuracy of individual electrodes, improves manufacturing yield, and simplifies the process by eliminating the need for through holes, while ensuring the reliability of the ink-jet head by preventing easy removal of external connection members.

Problems solved by technology

Thus, the longer the ink-jet head is, the more difficult the positioning process is between the pressure chambers in the passage unit and the individual electrodes in the actuator unit.
As a result, the manufacture yield of heads may be decreased.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing an ink-jet head
  • Method for manufacturing an ink-jet head
  • Method for manufacturing an ink-jet head

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0158]Thus, in the ink-jet head according to this embodiment, the piezoelectric sheet 241 most distant from the pressure chambers of the actuator unit 221 is a layer containing the active layers. The individual electrodes 235 are formed on the outer face of the actuator unit 221, and the conductive film 238 is so formed on the upper face of the piezoelectric sheet 241 while separated from the individual electrodes 235 as to have the same thickness as that of the individual electrodes 235. This results in no substantial level difference between the regions, in which the individual electrodes 235 are formed, and the remaining region. In case the FPC 136 is bonded by an adhesive not only to the individual electrodes 235 but also to the whole face on the piezoelectric sheet 241 so as to increase the adhesion, therefore, the FPC 136 and the actuator unit 221 are hardly peeled off even if a peeling external force is applied to the FPC 136. As a result, the reliability of the ink-jet head ...

third embodiment

[0175]Next, here will be described an ink-jet head according to the invention. At first, the ink-jet head 301 according to this embodiment will be described on its schematic construction with reference to FIG. 28 to FIG. 30.

[0176]As shown in FIG. 28 to FIG. 30, the ink-jet head 301 includes four actuator units 320 (as referred to FIG. 31 to FIG. 36) formed of a plate type, having a generally trapezoidal shape in a plan view. Actuator units 320 are laminated in two staggered shape on a passage unit 302 having a laminated structure of thin metallic sheets formed in a generally rectangular shape. On each upper side of the actuator units 320, electrode-patterned portions 303a are placed which are formed at the leading end regions of FPCs 303 and electrically connected to the actuator units 320 by soldering. These electrode-patterned portions 303a are formed into a generally trapezoidal shape substantially identical in a plan view to that of the actuator units 320.

[0177]Each actuator uni...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
lengthaaaaaaaaaa
distanceaaaaaaaaaa
Login to View More

Abstract

A method for manufacturing an ink-jet head, including forming a mark for indicating the positions of pressure chambers on a surface of a passage unit; preparing a member containing a piezoelectric sheet on which a common electrode is supported; attaching the member to the surface of the passage unit; and forming individual electrodes, based on the mark, on a face of the member facing the direction opposite to the attached face thereof to the passage unit.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of Invention[0002]The invention relates to an ink-jet head for printing by ejecting ink onto an image recording medium, a method for manufacturing the ink-jet head, an ink-jet printer, and a method of manufacturing an actuator unit.[0003]2. Description of Related Art[0004]In an ink-jet printer, an ink-jet head distributes ink supplied from an ink tank to pressure chambers. The ink-jet head selectively applies pulsed pressure to each pressure chamber to eject ink through a nozzle. As a means for selectively applying pressure to the pressure chambers, an actuator unit having laminated ceramic piezoelectric sheets may be used.[0005]As an example, a generally-known ink-jet head has one actuator unit in which continuous flat piezoelectric sheets extending over a plurality of pressure chambers are laminated. At least one of the piezoelectric sheets is sandwiched by a common electrode common to the pressure chambers and is being kept at the ground ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(United States)
IPC IPC(8): B41J2/14B41J2/145B41J2/16
CPCB41J2/14209B41J2/1609B41J2/1623B41J2/1626B41J2/1631B41J2/1634B41J2/1642B41J2/1643B41J2/145Y10T29/49126B41J2002/14217B41J2002/14225B41J2002/14306B41J2002/14459B41J2002/14491B41J2202/11B41J2202/20Y10T29/42Y10T29/4913Y10T29/49147Y10T29/49398Y10T29/49162Y10T29/49156Y10T29/49401
InventorSAKAIDA, ATSUOSHINKAI, YUJIASANO, TAKESHIHIROTA, ATSUSHI
OwnerBROTHER KOGYO KK